PUMP SET AND PUMP WITH ELECTROMAGNETIC RADIATION OPERATED INTERLOCK
First Claim
1. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
- an emitter for emitting electromagnetic radiation having a predetermined wavelength;
a detector for receiving electromagnetic radiation and providing a detector signal representative of the electromagnetic radiation received by the detector, said electromagnetic radiation received by the detector including the electromagnetic radiation having the predetermined wavelength emitted by the emitter and electromagnetic radiation having at least one wavelength other than the predetermined wavelength;
a filter circuit for filtering the detector signal provided by the detector to exclude a portion of the detector signal representative of the electromagnetic radiation having the wavelength other than the predetermined wavelength, said filter circuit providing an output signal representative of the filtered detector signal; and
a controller for determining whether a compatible pump set is properly loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical pump including an electromagnetic emitter and detector is provided. The emitter emits electromagnetic radiation of a predetermined wavelength. A pump set that is compatible with the medical pump modifies the emitted electromagnetic radiation when properly installed in the pump. The detector receives electromagnetic radiation, and a filter circuit excludes electromagnetic radiation having a wavelength other than the predetermined wavelength. The pump monitors the filtered signal to determine whether the received electromagnetic radiation corresponds to the emitted electromagnetic radiation as modified by a properly loaded, compatible pump set and determines whether a compatible pump set is properly loaded in the pump as a function thereof.
107 Citations
20 Claims
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1. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
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an emitter for emitting electromagnetic radiation having a predetermined wavelength; a detector for receiving electromagnetic radiation and providing a detector signal representative of the electromagnetic radiation received by the detector, said electromagnetic radiation received by the detector including the electromagnetic radiation having the predetermined wavelength emitted by the emitter and electromagnetic radiation having at least one wavelength other than the predetermined wavelength; a filter circuit for filtering the detector signal provided by the detector to exclude a portion of the detector signal representative of the electromagnetic radiation having the wavelength other than the predetermined wavelength, said filter circuit providing an output signal representative of the filtered detector signal; and a controller for determining whether a compatible pump set is properly loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of determining whether a compatible pump set is properly loaded in a medical pump, said pump set modifying electromagnetic radiation transmitted therethrough when properly loaded in the pump, said method comprising:
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emitting, by an emitter of the pump, pulses of electromagnetic radiation through a portion of a pump set loaded in the pump, said electromagnetic radiation having a predetermined wavelength and being pulsed at a predetermined frequency; receiving electromagnetic radiation at a detector of the pump, said electromagnetic radiation received at the detector including the electromagnetic radiation having the predetermined wavelength and electromagnetic radiation having at least one wavelength other than the predetermined wavelength, wherein the detector provides a detector signal representative of the received electromagnetic radiation; filtering, via a filter circuit of the pump, the detector signal to exclude frequencies other than the predetermined frequency of the pulses of electromagnetic radiation having the predetermined wavelength, said filter circuit providing an output signal representative of the intensity of the electromagnetic radiation pulsed at the predetermined frequency received by the detector; comparing the output signal to a threshold to determine whether the emitted electromagnetic radiation transmitted through the pump set has been modified; generating a detection signal representative of the comparison; and determining whether the pump set is compatible with the pump and properly loaded in the pump as a function of the detection signal. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of detecting electromagnetic radiation having a predetermined wavelength pulsed at a predetermined frequency in the presence of ambient light, said ambient light comprising electromagnetic radiation having a plurality of wavelengths, said method being for use with a medical pump, said pump including an emitter for emitting electromagnetic radiation having substantially the predetermined wavelength and a detector for receiving electromagnetic radiation, said method comprising:
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receiving electromagnetic radiation at the detector of the pump and providing a detector signal representative of the received electromagnetic radiation, said received electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength emitted by the emitter of the pump at the predetermined frequency and the electromagnetic radiation having the plurality of wavelengths; filtering, via a filter circuit of the pump, the provided detector signal to exclude a portion of the detector signal representative of electromagnetic radiation having frequencies other than the predetermined frequency, said filter circuit providing an output signal representative of the electromagnetic radiation having the predetermined frequency received by the detector; comparing the provided output signal to a threshold; generating a detection signal as a function of said comparing the provided output signal to the threshold, wherein the detection signal is digital high when the output signal exceeds the threshold and digital low when the output signal does not exceed the threshold; and determining, as a function of the detection signal, that the emitted electromagnetic radiation is being received at the detector, wherein the emitted electromagnetic radiation is determined as being received at the detector when the output signal is digital high.
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19. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
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an emitter for emitting pulses of electromagnetic radiation, said electromagnetic radiation having a predetermined wavelength and said pulses having a predetermined frequency; a detector for receiving electromagnetic radiation and providing a detector signal representative of the received electromagnetic radiation, said electromagnetic radiation received by the detector including the pulses of electromagnetic radiation having the predetermined wavelength emitted by the emitter and electromagnetic radiation having at least one wavelength other than the predetermined wavelength; a filter circuit for filtering the detector signal provided by the detector to exclude frequencies other than the predetermined frequency of the pulses of electromagnetic radiation having the predetermined wavelength, said filter circuit providing an output signal representative of the intensity of the electromagnetic radiation pulsed at the predetermined frequency; and a controller for determining whether a compatible pump set is properly loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal.
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20. A method of determining whether a compatible pump set is properly loaded in a medical pump, said pump set modifying electromagnetic radiation transmitted therethrough when properly loaded in the pump, said method comprising:
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emitting, by an emitter of the pump, electromagnetic radiation having a predetermined wavelength through a portion of a pump set loaded in the pump; receiving electromagnetic radiation including electromagnetic radiation having the predetermined wavelength and electromagnetic radiation having wavelengths other than the predetermined wavelength at a detector of the pump wherein the detector provides a detector signal representative of the received electromagnetic radiation; filtering, via a filter circuit of the pump, the detector signal to exclude a portion of the detector signal representative of the electromagnetic radiation having wavelengths other than the predetermined wavelength, said filter circuit providing an output signal representative of the filtered detector signal; comparing the output signal to a threshold to determine whether the emitted electromagnetic radiation transmitted through the pump set has been modified; generating a detection signal representative of the comparison; and determining whether the pump set is compatible with the pump and properly loaded in the pump as a function of the detection signal.
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Specification